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Finding the Fourth Proportional to 18,139.60, 27,209.40 and 14,856.40

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Solution

The fourth proportional to 18,139.60, 27,209.40 and 14,856.40 is: 22,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.60 : 27,209.40 = 14,856.40 : x
  2. Step 2: Convert to fraction form
    18,139.60/27,209.40 = 14,856.40/x
  3. Step 3: Cross multiply
    18,139.60x = 27,209.40 × 14,856.40
  4. Step 4: Simplify right side
    18,139.60x = 404,233,730.16
  5. Step 5: Solve for x
    x = 404,233,730.16/18,139.60
  6. Step 6: Final answer
    x = 22,284.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.